Improvement in lamp-sockets



w. N. WEEDEN'Q Lamp-Socket.

Patented Aug. 31,1875.

WILLIAM N. WEEDEN, OF WATERBURY, CONN, ASSIGNOR TO THE BENEDICT &BURNHAM MANUFACTURING COMPANY, OF SAME PLACE.

IMPROVEMENT IN LAMP-SOCKETS.

Specification forming part of Letters Patent No. 167,371, dated August31, 1875; application filed July 27, 1875.

To all whom it may concern:

Be it known that 1, WILLIAM N. WEEDEN, of Waterbury, in the county ofNew Haven and State of Connecticut, have invented a new Improvement inLamp'Socket; and I do hereby declare the following, when taken inconnection with the accompanying drawings and the letters of referencemarked thereon, to be a full, clear, and exact description of the same,and which said drawings constitute part of this specification, andrepresent, in-

Figure 1, perspective view of the strip as prepared to close around theshank of the fount and pedestal, and form what is known as the socketFig. 2, side view of the shank of the fount and upper end of thepedestal; Fig. 3, end view of the same; Figs. 4, 5, transverse sections,showing the method of securing by the socket.

This invention relates to an improvement in the means for coupling orsecuring glass lamp-fonnts to the pedestal.

The usual method hasbeen to form a socket from a disk of sheet metal,struck into form, and attached to the upper end of the pedestal. Intothis socket the shank of the fount is set and secured byplaster-of-paris or other cementa security which is liable todetachment, as well as being difficult to make. The formation of thissocket from a disk necessitates a considerable waste of metal, as wellas requiring several operations in its formation-difficulties which thisinvention is designed to overcome.

The invention consists in constructing the socket or coupling from astrip of sheet metal, with vertical depressions in the inside to formexternal vertical ribs on the socket, and with transverse inwardprojections ordepressions to correspond with like depressions orprojections on the shank of the fount and pedestal, so that by bendingand closing the strip around the two parts they will be securely heldtogether, as more fully hereinafter described.

A is the lamp-fount, constructed with a shank, B. This shank is hererepresented as hexagonal in form transversely, but may be of any shapeother than perfectly cylindrical. On the surface of this shank there isformed a bead, a, the circumference of Whichcorresponds substantially tothe diameter of the shank through opposite angles; but, instead of thebead, any radial projection or depression will answer the purpose. Theupper end 0 of the pedestal is constructed of substantially the sameform. The coupling or socket, as shown in Fig. 1, is formed from astraight strip of sheet metal, and with corrugations d, distant fromeach other so as to correspond to the angles of the shank and pedestal.These corrugations are formed by striking the metal outward from theinside, giving it the appearance of a rib on the outside. Transversedepressions e are also struck in the strip, corresponding to the head aon the shank and pedestal when the shank and pedestal are set together,as in Fig. 2. This strip is bent around the shank and pedestal when settogether, so that the projections a will enter the depressions e in thesocket. The two edges are brought together and closed one upon theother, as seen at f, Figs. 4 and 5. The joint is formed to correspond tothe corrugations or ribs d, so that the actual position of the joiningwill not be apparent.

As the diameter of the shanks will vary slightly the socket may betightened upon the shank by closing or pinching up the corrugations d.The spaces between the corrugations fit the body of the shank andpedestal, as seen in Fig. 5, and the recesses c the beads, as seen inFig. 4..

It will be understood that if the shank and pedestal are constructedwith radial depressions, instead of projections, the strip which formsthe socket must be made with corresponding inward projections instead ofthe recesses 6.

It is not essential to the use of this socket that the surface of theshank and pedestal be I do. not wish to be understood as broadlycorrugations d and transverse depressions or claiming secnringalamp-fonnt to its pedestal projections, substantially as and for thepurby indentations or irregularities in the couppose specified.

ling or socket, as such I am aware is not new. WM N 'VVEEDEN I claim iThe herein-described coupling for attaching Witnesses:

lamp-founts to their pedestals, consisting of a 1 L. BRONSON,

strip of sheet metal with, the vertical external CHAS. DICKINSON.

